About the "CBoot USB hub support" issue for Jetson AGX Xavier DevKit

Hello,

We have questions for the issue 2305640, which is described in the following document.

We’re now using Jetson AGX Xavier DevKit.
(In the figure of 2.1 General System Usability)

Does this issue occur in case of not using USB hub?
We’d like to know the detail of “CBoot USB hub support”.

We’re trying to connect the Basler camera to USB-C port near DC Power.
However, sometimes the camera isn’t recognized after booting up.
So, we doubt that the above CBoot USB hub support issue is related to the problem (the camera isn’t recognized).

Best Regards,
NY

Hi,

The issue is telling a bug in cboot. Are you using camera when device is still booting up?

Hi WayneWWW-san,

Thank you for your reply.
We are not using camera when device is still booting up but connecting the camera before booting up.
After booting up, the USB should enumerate the camera and work properly, right?

Best Regards,
NY

Yes, if it does not, share the dmesg after this error happens should help.

Hi WayneWWW-san,

We see the following log after this error happens.
Do you have any ideas to address the error?

[ 7.149355] usb 1-2: device not accepting address 2, error -71
[ 7.864831] usb 1-2: device not accepting address 3, error -71
[ 8.853014] usb 1-2: device descriptor read/64, error -71

Best Regards,
NY

Hello,

-71 is the protocol error. Which means this usb device does follow the usb spec or something like that.

My suggest is if you want to share any log on this forum, please share the full log.
I don’t even know if usb1-2 is really your camera or some other device.

The full log will tell more story.

Hello WayneWWW-san,

Thank you for your comment.
It would be really appreciated, if you would check the attached log file.
dmesg_ng.log (68.2 KB)

Best Regards,
NY

Could you share what camera is that?

Hello WayneWWW-san,

The camera is Basler acA1920-40uc and the firmware version is V1.5-2.

Best Regards,
NY

Does this camera directly connect to the port or through a hub?

WayneWWW-san,

The camera is connected to the port directly.

NY

Hi,

Such issue requires us to directly get that kind of camera and check the usb bus trace.

Thus, it may take time before we find out the root cause. Do you have to use this camera for your project?

Hi WayneWWW-san,

Thank you for your gentle support.
We’re going to use the camera for our project.
But, this issue happens only when connecting USB type C port and in case of connecting USB type A port this issue doesn’t occur.
So we’re considering trying to evaluate by using the port except for USB type C port.
If we would have additional questions, we’ll create new post.

Best Regards,
NY

Hi,

Please go to tegra194-p2888-0001-p2822-0000-common.dtsi and also add nvidia,usb3-gen1-only= <1>; to usb3-0, usb3-2 port.